DSD-INT 2016 iMOD-SEAWAT for groundwater in the coastal zone - Oude Essink
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Presentation by Gualbert Oude Essink (Deltares) at the iMOD International User Day, during Delft Software Days 2016. Tuesday 1 November 2016, Delft.
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DSD-INT 2016 iMOD-SEAWAT for groundwater in the coastal zone - Oude Essink
- 1. iMOD-SEAWAT for Groundwater in the coastal zone Gualbert Oude Essink Deltares & Utrecht University gualbert.oudeessink@deltares.nl More information: freshsalt.deltares.nl zoetzout.deltares.nl DSD 2016
- 2. Threaths to deltas worldwide: subsidence, salinisation, depletion, sealing, sea level rise, CC DSD 2016 1/3 of the world population lives in the coastal zone
- 3. DSD 2016 http://flood.firetree.net Mississippi, USA Nederland Nile delta, Egypt Mekong deltaBangladesh Jakarta, Indonesia Myanmar, Ayeyarwady
- 4. Salinisation processes at local scale Upconing low-lying area Shallow rainwaterlens Upconing extraction Salt water intrusion surface water Salt water intrusion groundwater Inundation saline seawater DSD 2016
- 5. Serious overexploitation aquifers worldwide 20160524 Ara Sul Murcia, Spanje Bangkok, Vietnam
- 6. 3D Regional coastal groundwater model studies Bangladesh, coastal plain Modelling: • variable-density groundwater flow, coupled solute transport Simulating effects of: • autonomous processes (change extraction rates) • sea level rise, changing recharge pattern • land subsidence Quantifying: • hydraulic head • saline seepage / infiltration • fresh groundwater resources DSD 2016
- 7. Numerical models groundwater coastal zone DSD 2016 The Netherlands Nile Delta Central part Bengal Delta Mekong, research just started Fresh GW Volume million m3: NL: ~1000000 Nile: ~450000 Extraction GW million m3/year: NL: ~1000 Nile: ~4000
- 8. NUS-Deltares project in Singapore Jurong Island Groundwater Modeling and Risk Assessment Study Monitoring and Modelling SEAWAT module in iMOD 3D fresh-brackish-salt distribution groundwater Esther van Baaren & Gualbert Oude Essink, DeltaresDSD 2016
- 9. iMOD-SEAWAT Jurong Island Singapore DSD 2016 fresh groundwater saline groundwater Fresh water lens 5 years after construction artificial island W E solid rock solid rock saline groundwater fresh groundwater N S Fresh water lens 5 years after construction artificial island Time (years) after construction island iMOD-solid module
- 10. iMOD-SEAWAT Nile delta DSD 2016 DEM
- 11. SWIBANGLA Managing Salt Water Impacts in Bangladesh May 2013 – September 2014 Marta Faneca, Gijs Janssen, Gu Oude Essink, DeltaresDSD 2016
- 12. iMOD-SEAWAT to build a 3D variable-density grw. model 3D data as input, e.g. boreholes to build up the subsurface: aquifers and aquitards ASCII’S as input E.g. surface elevation Analysis of the output as ASCIIS and 3D figures and data sets DSD 2016
- 13. 3D modelling area Gent-Terneuzen (BE-NL) Impacts of dredging, deepening, widening rivers/estuaries on adjacent groundwater systems Possible effects: -saline fluxes to agricultural lands -increased salinity in root zone DSD 2016
- 14. Questions? DSD 2016 Gualbert Oude Essink Deltares & Utrecht University gualbert.oudeessink@deltares.nl More information: freshsalt.deltares.nl zoetzout.deltares.nl